Hi. A few months ago I did a sweep over servers listed at http://support.ntp.org/bin/view/Servers/StratumOneTimeServers .
Out of the 183 reachable servers, 122 (67%) had offset <= 5 ms 156 (85%) had offset <= 10 ms 174 (95%) had offset <= 20 ms 9 had offset > 20 ms 1 had offset 10 s (measured against my stratum 2 in Prague). Your server currently shows as -24.8 ms. Also, the drop in your graph could just be a result of a network topology change. The offset could be a result of asymetric internet connection. Hope this helps, Matej Snoha On Wed, Aug 1, 2012 at 10:59 AM, [email protected] <[email protected]> wrote: > Hi, > > after reading the "The NTP Pool needs more servers" call for joining the > ntp.org pool I setup the ntp server ntp.jama.is. It uses a radio clock, > which gets the time from the german radio DCF77. The monitoring page at > pool.ntp.org showed a offset of about -25ms which recently increased to > -32ms. You can see a screen shot here: > http://s8.postimage.org/69taj7mwl/ntp_graph.png > > I am wondering why this happened. What precision can I expect from a ntp > stratum 1 server? If I compare with other stratum 1 servers their time is > around +-5 ms. Any ideas? > > Thanks > > > > _______________________________________________ > pool mailing list > [email protected] > http://lists.ntp.org/listinfo/pool >
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